V2.55 - The Underground Update is a release file of the Minecraft map Custom World project, made for Minecraft 1.20.2, 1.20.5, 1.20.1, 1.20.6, 1.20.4, 1.20.3. It was published on February 12, 2026 and is 530.8 MB in size. For the full description, screenshots and every other version, visit the Custom World project map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.
